Hoisting apparatus for silos, &amp;c.



H. SA'NTROCK.

HOISTING APPARATUS FOR SILOS; &c.

t APPLICATION FILED NOV- 4. i914- 1,152,053. Patented Aug. 31, 1915.

2 SHEETS-SHEET l.

- r INVENTOR WITNESSES v Kr W V ATTORN EY cnLumulA FLANOGRAFH c0..WASHING ON. D. C.

SANTROCK. v ,HOISTING APPARATUS ron sues, m.

APPLICATLON FILED NOV- 4.. 1914. 1,152,053. Patented Aug. 31, 1915.

2 SHEETS-SHEET 2.

3mm. MM. L121% 52,

ATTO R N EY CBLVMBIA PLANOGRAPH CO" WASHINGTON. U. C.

HENRY SANTROGK, or xnnsme'ron, Kansas.

HOTSTING APPARATUS FOR SILOS, 8w.

iSpecification of Letters Patent. I Patented Augg gl, 1915 Applicationfiled November 14, 1914. I Serial No. 72,151."

- To all whom it may concern."

Be it known that 1,.HENRY SANrRooK, a citizen of the United "States,residing at Kensington, in the county of Smith and State of Kansas,,haveinvented a new'and useful Hoisting Apparatus for Silos, &c.,'of whichthe following is a specification. I

The invention relates to improvements in hoisting apparatus for silos,etc. I r

The ob'ect of the present invention is to improve the construction ofhoistingapparatus and to provide a simple, p'ractical,' andefiicienthoisting apparatus of comparatively inexpensive construction,designed for use in silo pits and elsewhere, and capable of beingreadily transferred from one silo pit to another, so that a'singlehoisting apparatus may be operated in connection witha number of silos.

A further object of the'invention is to provide a hoisting apparatus ofthis character adapted to be operated by a person within a pit andcapable of automatically dumping its contents and of enabling suchperson to haul up as much silage as maybe required without leavingthepit before the desiredamount has been obtained. I p

With these and. other objects in view the invention consists in theconstruction and novel combination of parts'hereinafterfully described,illustrated in the accompanying drawings, and pointed out the claimsappended hereto, it being understood: that various changes in theform,f-p'roportion, size and minor details, of c'onstructionfwithin thescope of the claims, may be resorted to without departing fromthe spiritor sacrificing anyof ,theadvantages of the inventlOIL v i i I v In thedrawings Figure 1 is aside elevation of a hoisting apparatus constructedin accordance with this inventionand shown applied to a silopit,thebu'cket being low ered. Fig. 2 is a side elevation of the upperportion of the. same, parts being in section,

' and the bucket beingfin'itsdumping position. Fig. 3 isatransversesectional'view taken substantially on the linel3 -30f Fig. 2.Fig. 4; is a. detail horizontal sectional view on the line 4t ofFigl.Fig. 5 is a detail perspective View of the bucket. Fig. 6 is ahorizontalsectional,view on the line 66 of Fig. 1, illustrating theconstruction of theside catches of the bucket. Fig. 7 is a detailsectional view illustrating the manner ofmounting the pivoted eyes onthe pro jectingfarms' of bucket. Fig. Sis a detail sectional view on theline 8-8'of Fig. 7. Y

' Like'numerals of reference designate corresponding parts in thefigures of the drawings. 1 i

In the accompanying drawings, in which 7 is illustrated the preferredembodimentv of the invention, 1 designates a portablemain or supportingframe designed to be supportedjover' the top of a silo pit 2 by. meansof suitable beams or planking and adapted to be readily transferred fromone silo pit to anotherfnlthough the hoisting apparatus s shown' n'. theaccompanying drawingsin connection witha silo pit, it may be used invarious places for hoisting any kind of material. The main or supportingname, which may be of any desiredconstruction, isprovided'at thetopiwith front and rear bearings '8, in which is journaled ahorizontalshaftt carryinga hoisting/drum 5 and having keyed or otherwisesecured to it a relatively large .pulley 6 located at the rear end ofthe drum 5 and provided with a grooved; periphery for the reception ofan endless operating ropeor cable 7, which is maintaine'dtaut by aweight' 8. No claim is made'in the present application to the relativelylarge peripherally grooved pulley 6 and the weighted endless-operatingrope,

pending application Serial No. 818,996, filed Feb. 16,1914; 1

t The drum 5 has secured to it one end of a hoi'sting rope 9, which issecured at its other end to a'bail 10 of a bucket 11. The hoisting ropeor cable is caused to Wind uniformly around the drumby means of a ropeguide 12, which also constitutes a portion of thesubject matter of theaforesaid as this forms the subject matterof my co- 1 application. Thebail 10 is pivoted at its ends'13" to the sides of the bucket below thecenter thereof, and the upper portion of the ,bucketQabOVe the pivotedends of the bail,

is heavier than the lower portion, so that the bucketismounted inunstable equilibrium 'a' nfdwhenreleased, will turn on the pivots of thebail and automaticallydump its con tents. The bail, which is preferablyprovided with straight sides, is engaged by resilient catches 14,consisting of strips of metal arranged horizontally and secured at theirterminals at 15 to the outer facesof the sides 'of the bucket, andprovided atopposite sides of its center with approximately V-shapedbends 15*, forming a central ap-.

proximately V-shaped notch 16 and angularly disposed outer portions 17.The-approximately V-shaped bends of the catches enable the. bail to bereadily sprung into and out of the central recesses or notches of theside catches, which normally maintain the bucket in an upright positionwhile it is being carried to and from 'achute 18. The bucket is alsoprovided at opposite sides with forwardly projecting'farms 19,-extending upwardly and forwardly at an inclina tion and equipped withterminal eyes 20'projecting laterally from the arms and receivingflexible guides 21, consisting of ropes or cables arranged, on "overheadpulleys 22 which-are suitably mounted at the upper portion of theportable frame 1. The arms 19, which may be rigidly secured to the outerfaces of the sides of the bucket in any preferred manner, are angularly'bent at an intermediatepoint at 19 to ofi'set-their outer projectingportions from the plane of the side walls of the bucket. Each flexibleguide rope is'composed of two sides 23 and 24 havingweightsv 25 and 26secured to their lower terminals. The sides or portions 23 of theguiding ropes extendthrough the eyes 20 of the bucket and also throughguiding eyes'27,located at opposite sides of the chute. ,The weights 25,which are secured to the sides 23, are relatively heavy and are adaptedto rest upon the silage or other material to be handled, whiletheweights26, which are relatively light, maintain. the guiding ropes at theproper tension. The weighted guiding ropes automatically ad- .justthemselves by a descent with the decreasing'massof silage.

the arms 28,,securedto the sides of. the chute and extending rearwardlyinto the path of the eyes 20'and constituting stops for the same. .Whenthe bucket-is elevated by the hoisting mechanism, the eyes 20 come incontactwith the ffixed eyes 27,- and stop the upward movement of thefront portion of the bucket; The continued upward movement of the'rearportion of the bucket causes the same to tilton the pivots of the bailand the sides of the latter are carried out of engagement with thecentral notches of the side catches, therebycfreeing the bucket,

which, owing to its unstablemounting, is adapted to readily tilt andautomatically discharge its contents into the inclined chute. After thebucket has discharged its contents, itis lowered and the rearwardswinging of the bucket reenga-ges the sidecatches with they sides of thebail so that the bucket is maintained in an upright position while it isbeing lowered to the silage and'until the eyes 20 are again engaged withthe eyes 27 through the upward movement of the hoisting rope. The upperedge of the front side of the bucket will come in contact with the innerend of the chute 18 when the bucket is lowered, causing the bucket toswing rearwardly so that the bail 10 will be engaged by the catches 14.

In order to avoid twisting the guiding ropes when the bucket is dumped,the eyes 20 are provided with horizontal pivots 29, mounted in bearingopenings 30 in the projecting portions of the arms 19, and provided withdepending approximately L- shaped arms 31 extending downwardly at theinner sides of the fixed arms 19 and projecting outwardly beneath thesame and adapted to limit the movement ofthe eyes in one direction,without affecting the free swinging movement of the arms 19 on thepivots 29 inthe dumping of the bucket and the returning of the same toan upright position after dumping. The depending L- shaped arm tends tomaintain the pivoted or swiveled guiding eye normally in a horizontalposition when the bucket is being raised andlowered. The spacedvertically disposed longitudinally adjustable or extensible guidingropes are adapted to prevent any horizontal swinging of the bucket andconsequent twisting of the hoisting rope, and guide the eyes of thebucket into engagement with the relatively fixed eyes at opposite sidesof the chute, whereby the bucket will be positively and automaticallydumped at the limit of its upward travel.

, While a portable frame, designed particularlyfor use in connectionwith silo pits, is

illustrated in the accompanying drawings, the improved hoistingmechanism may be permanently mounted, as it is adapted for use whereverit is desired to elevate a bucket and automatically dump its contentsinto a chute or other receptacle. 1 t

lVhat is claimed is 13A hoisting apparatus of the class describedincluding a bucket provided with a pivoted bail, hoisting mechanismconnected with the bail for raising and lowering the bucket, a catchmounted on the bucket and engaging the bail for maintaining the bucketnormally in an upright position, and means located in the path of thebucket and adapted to swing the same and carry the catch out ofengagement with the bail, whereby the bucket is dumped automatically.

2. A hoisting apparatus of the class de scribed including a buckethaving a bail and pivotally connected'with the same in unstableequilibrium, fastening means mounted on the bucket for'engaging the bailto normally maintain the bucket in an upright position, a hoistingdevice connected with the bail for raising and lowering the bucket, andmeans arranged'in the path of the bucket for bail to be sprung into andout of engage.

ment with the catch, and means located in the path of the bucket andarranged to swing the same out of engagement with the catch.

4. A hoisting apparatus of the class described including a bucket havinga pivoted bail, a hoisting device connected with the bail for raisingand lowering the bucket, a guide, means carried by the bucket andslidable along the guide, and relatively fixed means also receiving theguide and arranged in the path of the means carried by the bucket andadapted to tilt the latter forautomatically dumping the contentsthereof.

5. A hoisting apparatus of the classdescribed including a bucket havinga pivoted bail, a hoisting device connected with the bail for rasing.and lowering the bucket, a longitudinally adjustable or extensibleguide, an eye carried by the bucket and slidable along the guide, and arelatively fixed eye also receiving the guide and arranged in the pathof the eye of the bucket and adapted to tilt the latter.

6. A hoisting apparatus of the class described including a bucket havinga pivoted bail, a hoisting device connected with the bail for raisingand lowering the bucket, an overhead pulley, a guiding rope arranged onthe pulley and having side portions depending therefrom and providedwith weights, one of the weights being heavier than the other andadapted to rest upon the material to be handled and to descend as themass of material decreases in size, an eye carried'by the bucket andslidable along the guiding rope, and a relatively fixed eye alsoreceiving the guiding rope and arranged in the path of theeye of thebucket.

7. A hoisting apparatus of the class described including a bucket havinga pivoted bail, a catch mounted on the bucket and engaging the bail fornormally maintaining the bucket in an upright position, a longitudinalextensible vertically disposed guide, an eye carried by the bucket andslidable along the guide, and a relatively fixed eye also receiving theguide and arranged in the path of the eye of the bucket to tilt thelatter and discharge the contents thereof.

8. A hoisting apparatus of the class described including a pivotallymounted bucket, a vertical guide, a pivoted eye car- 'ried by the bucketand slidable along the guide, and means arranged in the path of thepivoted eye and receiving the guide for engaging the pivoted eye to tiltthe bucket as it is being elevated.

9. A hoisting apparatus of the class described including a pivotallymounted bucket, an arm projecting from the bucket, an eye having a pivotmounted on the proj ecting arm and providedwith a dependingapproximately L-shaped arm extending beneath the said projecting arm forlimiting the movement of the eye, a vertical guide extending through theeye of the bucket, and a relatively fixed eye receiving the guide andarranged in the path of the eye of the bucket for tilting the latter todischarge the contents of the same. I

10. A hoisting apparatus of the class described includinga fixed chuteprovided at opposite sides with eyes, a bucket having a pivoted bail, ahoisting device connected with the bail for raising and lowering thebucket, arms projecting from the bucket and provided with eyes,extensible flexible guides located at opposite sides of the chute andextending through the eyes thereof and slidably receiving the eyes ofthe bucket, the latter being adapted to engage the eyes of the chute tocause a tilting movement of the bucket, and yieldable means carried bythe bucket for engaging the bail to maintain the bucket normally in anupright position.

11. A hoisting apparatus, comprising a pivotally mounted bucket, meansfor elevating the bucket, a vertical guide, arms connected to thebucket, means connecting the arms to the guide and forming a pivot forthe arms, during the dumping of the bucket, and means located in thepath of said means for engaging the same for tilting the bucket.

In testimony, that I claim the foregoing as my own, I have heretoaffixed my signa ture in the presence of two witnesses.

HENRY SANTROCK.

Witnesses:

J. H. BALL, H. F. BALL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

